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Ierofanga [76]
3 years ago
5

What is 7/10 - 1/15?

Mathematics
1 answer:
muminat3 years ago
6 0
\frac{7}{10}-\frac{1}{15}=\frac{7 \times 3}{10 \times 3}-\frac{1 \times 2}{15 \times 2}=\frac{21}{30}-\frac{2}{30}=\frac{21-2}{30}=\frac{19}{30}
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Answer:

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Step-by-step explanation:

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The customers are chosen without replacement, and the order in which they are chosen is not important. So we use the combinations formula to solve this question.

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Probability:

p = \frac{D}{T} = \frac{2145}{54615} = 0.0393

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